JP2012237215A - Package type rotary pump unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package type rotary pump unit that can perform more efficient cooling by more efficiently using cooling air absorbed from the outside.SOLUTION: A package 20 includes: a base 21 with an intake port 21a for the cooling air; a mounting shelf 22 where a rotary pump 10 and a driving device are mounted, and that includes an opening 22a to ventilate the cooling air to a housing space 20a of the package 20; a pump coaxial fan 15 comprising a centrifugal fan impeller 15a and a fan casing 15b which are coaxially mounted to a rotary shaft 10a of the rotary pump; and a ventilation passage 30 where one sidewall 23 of the package 20 is formed to be double-structured so that the exhaust of the pump coaxial fan 15 is sucked to bypass at least part of the housing space 20 by a cooling fan 14 having a communication hole 30a for introducing the exhaust of the pump coaxial fan 15.

Description

  The present invention relates to a rotary pump, a drive device that drives the rotary pump, a package that houses them, and an air that is disposed on the top of the package and sucks air from below into the package to discharge it outside. The present invention relates to an exhaust heat structure of a package type rotary pump unit including a cooling fan for cooling the inside of a package as a component.

  Conventionally, according to the present applicant, a pneumatic device that generates negative or positive air pressure, such as a vacuum pump or a blower, a storage box that can store a plurality of pneumatic devices and is soundproofed by storing them in a closed space, and a pneumatic pressure A pneumatic device station comprising a blower for generating a cooling air flow that flows in one direction from the lower side to the upper side in the storage box so as to cool the storage box heated by the device, and storage of the pneumatic device A box (see Patent Document 1) has been proposed.

According to this, a plurality of pneumatic devices can be housed centrally and soundproofed, and can be suitably cooled and managed centrally.
However, the air that receives heat generated from the outer surface of the rotary pump is mixed with the cooling air sucked from the outside in the storage space, and the storage space is warmed. For this reason, the rotary pump cannot be directly cooled by the coldest cooling air sucked from the outside, and it is difficult to perform more efficient cooling.

JP 2007-127114 A (first page)

The problem to be solved with respect to the package type rotary pump unit is that the air that received heat from the outer surface of the rotary pump and the cooling air sucked from the outside are mixed in the storage space. It is difficult to perform more efficient cooling.
SUMMARY OF THE INVENTION An object of the present invention is to provide a package type rotary pump unit that can efficiently use cooling air sucked from the outside and perform more efficient cooling.

The present invention has the following configuration in order to achieve the above object.
According to one form of the package type rotary pump unit according to the present invention, the rotary pump, the driving device for driving the rotary pump, the package for storing them, and the air inside the package disposed on the upper part of the package A package-type rotary pump unit comprising a cooling fan that cools the inside of the package by sucking the vacuum from the bottom and discharging it to the outside, and is mounted coaxially on the rotary shaft of the rotary pump A centrifugal fan type impeller arranged to cool the pump, and a pump coaxial fan comprising a casing for blowing air that covers the impeller and guides the exhaust to the side, and the package includes the package A base portion having a cooling air inlet at the bottom, and the rotary pump and the driving device are mounted on the upper side of the base portion. The mounting shelf provided with an opening so that the cooling air can be vented to the storage space of the package, and the exhaust of the pump coaxial fan is sucked by the cooling fan by bypassing at least a part of the storage space. As described above, one side wall portion of the package is provided in a double structure, and a ventilation passage of one side wall portion formed with a communication port into which exhaust of the pump coaxial fan is introduced.

  Moreover, according to one form of the package-type rotary pump unit which concerns on this invention, the said shelf part is provided in multiple steps | paragraphs so that the said some rotary pump can be accommodated in the state accumulated in the vertical direction. Can be characterized.

  Moreover, according to one form of the package type rotary pump unit which concerns on this invention, the said cooling air is at least one part of the storage space of the lower side among the said storage spaces by the several said shelf part by the said cooling fan. A lower communication port and an upper side communicating from the base portion so that the other side wall portion of the package is provided in a double structure so as to bypass and be sucked and cooling air from the base portion is introduced. It is possible to provide an air passage in the other side wall portion in which an upper communication port for ventilating the cooling fan through the storage space is formed.

Further, according to one aspect of the package-type rotary pump unit according to the present invention, the rotary pump is provided in series with the electric motor as the driving device via a coupling, and the coupling is provided with the The impeller of the pump coaxial fan may be mounted.
Further, according to one aspect of the package type rotary pump unit according to the present invention, the main body portion of the rotary pump and the silencer portion that silences the air sound discharged from the main body portion of the rotary pump are connected in series. The electric motor, the main body of the rotary pump, and the silencer are arranged in series in this order.

  Further, according to one aspect of the package type rotary pump unit according to the present invention, the rotary pump is a vacuum pump, and the exhaust of the vacuum pump is exhausted to the ventilation passage of the one side wall portion. The vacuum pump may be provided with an exhaust pipe for guiding the exhaust, and the one side wall may be provided with an exhaust pipe communication port through which the exhaust of the vacuum pump is introduced.

  Further, according to one form of the package type rotary pump unit according to the present invention, the switchboard is fixed inside a part of the wall part provided in the double structure, and the part of the wall part includes A lower communication port for communicating from the base portion so that cooling air from the base portion is introduced into the interior, and an upper communication port for ventilating the cooling fan through the upper storage space It can be characterized by being formed.

  According to the package type rotary pump unit of the present invention, the flow of air that receives heat from the outer surface of the rotary pump and the flow of cooling air sucked from the outside are separated and sucked by the cooling fan. Since it can exhaust, it has the especially advantageous effect that more efficient cooling can be performed.

It is sectional drawing seen from the front side which shows the form example of the package type rotary pump unit which concerns on this invention. It is sectional drawing seen from the side surface of the example of FIG. It is a perspective view of the state which removed one side wall part of the package concerning the example of a form of FIG. It is the perspective view seen through in order to demonstrate the inside of the example of a form of FIG. It is a perspective view which shows the detail of the rotary pump with which the electric motor concerning the form example of FIG. 1 was mounted | worn.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a package type rotary pump unit according to the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 to 5).
The package-type rotary pump unit according to the present invention includes a rotary pump 10, a drive device (for example, an electric motor 11) that drives the rotary pump 10, a package 20 that houses them, and an upper portion of the package 20. Then, the cooling fan 14 that cools so as to suppress the temperature rise inside the package by sucking the air inside the package from below and discharging it to the outside is a constituent element. The cooling fan 14 is located above the rotary pump 10 and can ventilate the cooling air heated by taking heat from the surfaces of the rotary pump 10 and the electric motor 11.

  Examples of the rotary pump 10 include pneumatic devices such as a vacuum pump and a blower driven by an electric motor 11. Further, examples of the vacuum pump include a vane pump, a claw pump that is a rotor non-contact type pump, a screw pump, and the like.

Reference numeral 15 denotes a pump coaxial fan. As shown in FIG. 2, a centrifugal fan type impeller 15 a which is coaxially mounted on the rotary shaft of the rotary pump 10 and arranged to cool the rotary pump 10 and the impeller thereof. A blower casing 15b (see FIG. 5 and the like) is provided as a constituent element so as to cover 15a and guide the exhaust to the side.
In this embodiment, the rotary pump 10 is connected in series via an electric motor 11 as a driving device and a coupling 13 (see FIG. 5), and the impeller of the pump coaxial fan 15 is provided in the coupling 13. 15a is attached.

Due to the intake action of the pump coaxial fan 15, the wind sucked in the axial direction is generated so as to cool the surface of the rotary pump 10. Further, the exhaust air from the pump coaxial fan 15 is discharged to the side (direction perpendicular to the axial direction) by the action of the centrifugal fan (see the hatched arrow in FIG. 1 and the arrow in FIG. 5).
According to the pump coaxial fan 15, an air cooling mechanism that can cool the rotary pump 10 with the rotational drive of the rotary pump 10 by the electric motor 11 can be rationally configured.

  In the present embodiment, the rotary pump 10 is connected in series in the horizontal direction via the electric motor 11 and the coupling 13, so that the rotary pump 10 is provided in an assembly form that is long in the horizontal direction that is the connection direction. And since the package 20 accommodates the rotary pump 10 and the electric motor 11 so that the connecting direction thereof is the front-rear direction, the depth in the front-rear direction is longer than that in the left-right direction. The rotary pump 10 is disposed and stored on the front side of the package 20.

  According to this, compared with the electric motor 11, the rotary pump 10 which is a generation source of a louder noise can be arrange | positioned in the back | inner side. Therefore, it is possible to increase the distance between the worker and the generation source of the larger noise (rotary pump 10). Thus, the influence of the noise on the operator can be reduced by disposing a larger noise source farther away.

  Furthermore, in this embodiment, a main body portion of the rotary pump 10 and a silencer portion 12 that silences air sound discharged from the main body portion of the rotary pump 10 are connected in series, and the electric motor 11 and the rotary pump 10 are connected. The body part and the silencer part 12 are arranged in series in this order. Here, the main body portion of the rotary pump 10 of the present embodiment includes a gear box portion including a cylinder portion and an oil bath in which a rotor rotates, as constituent elements. Further, the rotary pump 10 of this embodiment is obtained by adding components such as the silencer 12 to the main body.

By arranging the components in this manner, the components as the heat source and the noise source are arranged in series, and the heat and noise can be dispersed. Therefore, it becomes a form which is easy to perform cooling and sound insulation, and can improve a cooling effect and a sound insulation effect.
Moreover, since the silencer part 12 which is one of the generation sources of a big noise can be arrange | positioned in the back | inner side as a soundproof effect, the influence of the noise to an operator can be reduced.

Next, an example of the form of the package 20 will be described.
Reference numeral 21 denotes a base portion which is provided with a cooling air intake port 21 a at the lower portion of the package 20.
In this embodiment, the outer dimension of the base portion 21 is provided slightly smaller than the upper body portion, and the base portion 21 is a narrowed stepped portion. A frame portion 21b having an outer dimension equivalent to that of the body portion is provided at the lowermost portion of the base portion 21. An air inlet 21 a is provided on the side surface of the base that is the side wall of the base portion 21. An intake filter 21c is attached to the intake port 21a.

  According to this, even if the rectangular and box-shaped package 20 as shown in the figure is arranged so as to be in contact with the wall of the building, the air inlet 21a is not blocked, and the outside air is supplied from the air inlet 21a on the side of the base. The cooling air (see the white arrows in FIGS. 1 and 2) can be reliably sucked. Moreover, since the dust in the cooling air is filtered by the intake filter 21c, the inside of the package 20 can be prevented from being contaminated as much as possible.

Reference numeral 22 denotes a mounting shelf, which is provided on the upper side of the base 21 and on which the rotary pump 10 and the electric motor 11 are mounted, and for cooling air (see white arrows in FIGS. 1 and 2) An opening 22a is provided so that the storage spaces 20a and 20b can be ventilated.
In the present embodiment, a plurality of mounting shelves 22 are provided so that a plurality of rotary pumps 10 can be stored in a state where they are stacked in the vertical direction (vertical direction). In this embodiment, it is provided in two stages. Each mounting shelf 22 is provided with an opening 22a.

  According to this, the cooling air can pass through from the bottom through the opening 22a. The air flow from the bottom to the top is in the same direction as the rising air flow of the air warmed by the rotary pump 10, and the ventilation resistance can be kept low, and the cooling effect can be improved.

  Furthermore, the package 20 of this embodiment is provided with a plurality of stages of mounting shelves 22 so that a plurality of rotary pumps 10 to which the electric motor 11 is coupled can be stored in a state of being stacked one by one in the vertical direction (vertical direction). It has been. According to this, one rotary pump 10 is stored in each stage, and the depth of the package 20 is longer than the left-right direction (lateral direction). A larger noise source can be arranged on the back side, and the soundproofing effect can be improved.

  The position of the opening 22a is the effect of cooling air on the outer surface of the main body (the cylindrical casing in which the rotor is built and the casing of the gear box) that is the most desired portion of the rotary pump 10 to be cooled. So as to be able to pass through the main body part so as to be arranged in series in the longitudinal direction. According to this, about the main-body part of the rotary pump 10 which needs the most cooling, cooling air can flow easily with low ventilation resistance, and can be cooled efficiently.

  In the present embodiment, the lower mounting shelf 22 has an opening 22a in the lower portion of the electric motor 11, but the upper mounting shelf 22 has the lower side of the electric motor 11. There is no opening 22a in the part. According to this configuration, more cooling air can be sent to the upper rotary pump 10 at a lower temperature, and the upper rotary pump 10 can be effectively cooled.

  Reference numeral 30 denotes an air passage in one side wall portion, and one side wall portion 23 of the package 20 is sucked by the cooling fan 14 so that the exhaust air of the pump coaxial fan 15 bypasses at least a part of the storage spaces 20a and 20b. However, the communication port 30a into which the exhaust of the pump coaxial fan 15 is introduced is formed. Therefore, the air passage 30 on the one side wall is used as an exhaust duct.

  The air passage 30 in one side wall portion of the present embodiment opens to the upper portion of the upper storage space 20b through the upper communication port 30b provided in the upper portion of the inner wall 23a of the one side wall portion 23. Accordingly, the exhaust gas introduced from the communication port 30a flows through the inside of the air passage 30 and the upper communication port 30b to the upper part of the upper storage space 20b, and is sucked by the cooling fan 14 and externally (upward in this embodiment). Is released. Further, in this embodiment, the rotary pump 10 is housed in two stages, and accordingly, the communication ports 30a are provided at two places above and below. According to this, the exhaust by the upper and lower pump coaxial fans 15 and 15 not only passes through the lower rotary pump 10 and its storage space 20a but also bypasses most of the upper rotary pump 10 and its storage space 20b. Will be discharged.

  According to this, the flow of cooling air sucked from the outside and the flow of air receiving heat generated from the outer surface of the rotary pump 10 are separated as much as possible, and the main route passing through the storage spaces 20a and 20b, The air can be exhausted by being sucked by the cooling fan 14 through a bypass route passing through the ventilation path 30 in the side wall portion. For this reason, more efficient cooling can be performed. That is, since the cooling air of the main route is blown so as to cool the rotary pump 10 without being mixed with other warm air as much as possible, the cooling effect can be improved.

  At this time, the air flow rate of the cooling fan 14 is set to be larger than the air flow rates of the pump coaxial fan 15 and the electric motor attached fan. According to this, the air flow for cooling can be made to flow smoothly, and the cooling effect can be enhanced.

  In addition, regarding the air volume of the cooling air for cooling each rotary pump 10, the distribution of the main route and the detour route described above may be set as appropriate. Usually, the air volume of the main route is set larger than that of the detour route. Further, the two rotary pumps 10 of the present embodiment can control the respective rotational speeds by inverter control. For this reason, the distribution of the air volume may be adjustable according to the control of the rotational speed.

  Furthermore, in this embodiment, the arrangement position of the cooling fan provided above each rotary pump 10 is set to be directly above the main body of the rotary pump 10 which is the maximum heat generating part of the rotary pump unit. On the other hand, the pump coaxial fan 15 and the electric motor-attached fan are arranged at positions away from the cooling line of the pump maximum heat generating portion (the main body portion of the rotary pump 10). Without disturbing the flow of the cooling line of the main route, a new cold air flow can be generated by the pump coaxial fan 15 and the fan attached to the electric motor, and the cooling efficiency can be improved.

  31 is an air passage in the other side wall, and cooling air (arrow) bypasses at least a part of the lower storage space 20a among the storage spaces 20a and 20b by the plurality of mounting shelves 22 by the cooling fan 14. The other side wall 24 of the package 20 is formed in a double structure so that the air is sucked in, and the cooling air (arrow) from the base 21 is introduced so that the base 21 is cooled. A lower communication port 31a communicating with the upper storage space 20b and an upper communication port 31b communicating with the upper storage space 20b are formed. The upper communication port 31b of the present embodiment is provided to open to the inner wall 24a of the other side wall portion 24. Accordingly, the air passage 31 on the other side wall is an intake duct for cooling air applied to the upper rotary pump 10.

According to this, a diversion route for sending fresh cooling air to the upper rotary pump 10 is formed. By providing such a diverting REIT, the cooling air can be efficiently guided to the upper rotary pump 10. That is, the upper rotary pump 10 is structured to be able to directly apply the cooling air to the upper rotary pump 10 without being affected by the heat generated by the lower rotary pump 10 as much as possible, thereby improving the cooling efficiency. it can.
Since the cooling efficiency can be improved in this way, the cooling fan 14 can be downsized and the package 20 can be downsized. In addition, in order to optimize the flow rate of the cooling air and increase the cooling efficiency, the storage spaces 20a and 20b may be space spaces having an appropriate size.

  Further, the rotary pump 10 of this embodiment is a vacuum pump, and the vacuum pump exhaust (see the hatched arrow in FIG. 1) is exhausted to the ventilation passage 30 on one side wall. The pump is provided with an exhaust pipe line 12a for guiding the exhaust gas to the ventilation path 30, and an exhaust pipe communication port 30c through which the exhaust of the vacuum pump is introduced is provided on one side wall portion 23. Accordingly, the exhaust of the vacuum pump that becomes high temperature merges with the exhaust of the pump coaxial fan 15, passes through the air passage 30, and is discharged by the cooling fan 14.

According to this, since the cooling air can be blown to cool the rotary pump 10 (the vacuum pump in this embodiment) without mixing with the exhaust of the vacuum pump, the cooling effect can be improved.
In addition, 10a is an intake port of the vacuum pump, 10b is an intake filter unit of the vacuum pump, and 10c is an intake pipe of the vacuum pump. The suction pipe 10c of the vacuum pump is connected to a cylindrical casing in which the rotor of the vacuum pump is built.

  The switchboard 40 is fixed to the interior 32 of a part of the wall part (front wall part 25) provided in a double structure, and the inner wall 25a of a part of the wall part (front wall part 25) In order to vent the cooling fan 14 through the lower communication port 32a for communicating from the base portion 21 and the upper storage space 20b so that the cooling air from the base portion 21 is introduced into the interior 32 thereof. The upper communication port 32b is formed.

  According to this, a diversion route for sending fresh cooling air to the switchboard 40 is formed, and the cooling air is introduced by the cooling fan 14 into the interior 32 of the front wall 25 where the switchboard 40 is arranged. And ventilate by discharging. Therefore, the switchboard 40 can be suitably cooled. Moreover, according to this structure, the switchboard 40 can be suitably accommodated in the package 20. Reference numeral 41 denotes an operation panel (see FIGS. 3 and 4).

Furthermore, since the switchboard 40 is fixed inside the front wall 25 provided in the double structure of the package 20, the soundproofing effect on the front side can be enhanced. It is considered that the worker usually works on the front side of the package 20, and can improve the work environment appropriately.
In this embodiment, the two rotary pumps 10 and 10 are configured to be inverter-controlled, and the switchboard 40 is an electrical component such as an inverter.

  In this embodiment, the cooling fan 14 that is a noise generation source is disposed on the rear side of the package 20, and the exhaust port 14 a of the cooling fan 14 is also provided on the rear side of the package 20. In terms of the relationship with the electric motor 11, the cooling fan 14 is located on the back side of the electric motor 11. In terms of the relationship with the switchboard 40, the electric motor 11 is disposed on the side close to the switchboard 40. Even with such an arrangement relationship, a configuration that is a larger noise source is provided on the rear side of the package 20 and is located on the far side away from the operator. Therefore, the soundproofing effect can be enhanced and the work environment can be improved appropriately.

  Moreover, the left and right side wall parts 23 and 24 of the package 20 are provided in a double structure by panels, and these panels also serve as a noise shielding material, so that the soundproofing effect can be enhanced. In addition, the double structure using the panel is advantageous in that it does not require a complicated shape, is inexpensive, and can be easily maintained.

  The fan attached to the electric motor is mounted coaxially with the rotating shaft of the electric motor 11 and is built in the motor case, and is provided to cool the electric motor 11 by generating axial wind from the outside to the inside. . According to the electric motor-attached fan, as described above, the cooling air different from the main route is generated, which contributes favorably to enhance the cooling effect.

Each of the cooling air flows described above is finally sucked by the cooling fan 14 and discharged to the outside of the package 20 in a lump so that the inside of the package 20 is ventilated. Yes.
For this reason, the openings for supplying and exhausting cooling air are only the air inlet 21a on the side of the base and the air outlet 14a on the upper surface of the package 20 (top plate 27), and the structure does not leak noise. Furthermore, since the cooling fan 14 is disposed rearward and the wind also escapes from the rear, wind noise can be reduced.

  Further, by providing a guide for guiding the exhaust direction of the cooling fan 14 in a specific direction such as the rear side, or by appropriately providing a partition in the arrangement space of the cooling fan 14, the soundproofing effect can be enhanced. Moreover, since the exhaust of the rotary pump 10 is complicated by its complicated flow path, the soundproofing effect is enhanced.

  Reference numeral 50 denotes a sound absorbing material, which is provided in a state of being laminated on the inner surface of each panel of each of the wall portions 23, 24, 25, and 26. Double side wall portions 23 and 24 are stretched on the respective panels. As this sound-absorbing material 50, a polyurethane or polyethylene foam or glass fiber can be used.

According to the sound absorbing material 50, the operation sound of the rotary pump 10 can be soundproofed, and wind noises passing through the double-structured air passages 30 and 31 can also be absorbed. Moreover, there exists a heat insulation effect and it can prevent that the outer surface of the panel which comprises the wall part of the package 20 becomes high temperature by exhaust_gas | exhaustion.
Furthermore, the noise absorbing material 50 is provided on the bottom plate 28 (inner bottom surface) of the base portion 21, thereby reducing noise from the air inlet 21 a on the side surface of the base due to reflection. Further, a sound absorbing material 50 is provided on the upper portion of the cooling fan 14 (the back surface of the top plate 27) to reduce noise from the exhaust port 14a.

  As described above, the present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

DESCRIPTION OF SYMBOLS 10 Rotating pump 11 Electric motor 12 Silencer part 12a Exhaust pipe line 13 Coupling 14 Cooling fan 15 Pump coaxial fan 15a Impeller 15b Air blower casing 20 Package 20a Lower storage space 20b Upper storage space 21 Base part 21a Inlet 21c Intake filter 22 Mounting shelf portion 22a Opening portion 23 One side wall portion 23a Inner wall 24 The other side wall portion 24a Inner wall 25 Front wall portion 26 Back wall portion 30 One side wall portion air passage 30a Communication port 30b Upper communication port 30c Exhaust duct communication port 31 Ventilation channel 31a on the other side wall 31a Lower communication port 31b Upper communication port 32 Inside 32a Lower communication port 32b Upper communication port 40 Switchboard 50 Sound absorbing material

Claims (7)

A rotary pump, a driving device for driving the rotary pump, a package for storing the rotary pump, and a package disposed in the upper part of the package for sucking air inside the package from below and discharging the package outside to cool the package. A package-type rotary pump unit having a cooling fan as a component,
A centrifugal fan type impeller mounted coaxially on the rotary shaft of the rotary pump and arranged to cool the rotary pump, and a blower casing that covers the impeller and guides exhaust to the side Equipped with a pump coaxial fan
The package is provided with a base portion having a cooling air inlet at a lower portion of the package, and the rotary pump and the driving device are mounted on the base portion and the cooling air is placed on the package. A mounting shelf having an opening so that air can be ventilated into the storage space, and exhaust air from the pump coaxial fan is sucked by the cooling fan so as to bypass at least a part of the storage space. A package-type rotary pump unit comprising: a side wall portion provided in a double structure; and an air passage in one side wall portion formed with a communication port into which exhaust air from the pump coaxial fan is introduced.   2. The package-type rotary pump unit according to claim 1, wherein a plurality of stages of the shelf are provided so that the plurality of rotary pumps can be stored in a vertically stacked state.   The other side wall of the package is doubled so that the cooling air is sucked by the cooling fan by bypassing at least a part of the lower storage space among the storage spaces by the plurality of storage racks. The other formed with a lower communication port that communicates from the base portion and an upper communication port that vents to the cooling fan through the upper storage space so that cooling air from the base portion is introduced. The package type rotary pump unit according to claim 2, further comprising an air passage in the side wall portion of the package type.   2. The rotary pump is provided in series with an electric motor, which is the driving device, via a coupling, and an impeller of the pump coaxial fan is mounted on the coupling. The package type rotary pump unit according to any one of?   A main body portion of the rotary pump and a silencer portion that silences air sound discharged from the main body portion of the rotary pump are connected in series, and the electric motor, the main body portion of the rotary pump, and the silencer portion 5. The package type rotary pump unit according to claim 4, wherein the package type rotary pump unit is arranged in series in order.   The rotary pump is a vacuum pump, and an exhaust pipe for guiding the exhaust to the vacuum pump is provided so that the exhaust of the vacuum pump is exhausted to the ventilation path of the one side wall, and the one side wall The package-type rotary pump unit according to any one of claims 1 to 5, wherein an exhaust pipe communication port through which exhaust of the vacuum pump is introduced is provided in the part.   The switchboard is fixed inside a part of the wall portion provided in the double structure, and the air for cooling from the base portion is introduced into the inside of the wall portion. The lower communication port for communicating from the base portion and the upper communication port for ventilating the cooling fan through the upper storage space are formed. Package type rotary pump unit.

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